What's wrong with my car? How serious is it potentially? How much will it cost?

What is your question?

B200 Mercedes Benz 2006 Just put on summer tires. New front tires, old rear tires. Just put in a new steering u joint. Recently noticed that when I went over bumps it would squeak and at low speeds when I rounded a corner I'd hear the squeak as well.

What makes this problem better or worse?

B200 2006, you don't have that option so I just had to make something up

How long has your 1992 Mercedes-Benz 500E had this problem?

Last drive